Armstrong, who by then had won his last of seven Tours de France, joked on air that the yellow tie he was wearing was made from the yellow jersey worn by the race's leader.

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It brought out the caution that ended the race under yellow, and Servia was hit with a 30-second penalty for what IndyCar deemed avoidable contact.

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Simpson became the first British rider to claim the race leader's yellow jersey in 1962 and his achievements paved the way for English-speaking competitors in a sport entirely dominated by Europeans.

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